Can we change when f.lux is going to work?

I configured my location and it's set to change to 3400K at 5 PM (during the day I use 5000K), but I need to do it at 4 PM. I tried changing the location but f.lux continues to modify itself only at 5 PM.

Why can't I change things at a specified time? Night Shift (iOS) works the same way, but allows us to specify a moment of the day when it will start to work.